black-tie
UK[ˌblæk ˈtaɪ]US[ˌblæk ˈtaɪ]
adj
requiring or consisting of formal evening wear for men, typically a black dinner jacket and black bow tie.
n
a black bow tie worn as part of formal evening dress.
Morpheme Breakdown
black
tie
black
color
tie
neckwear
Etymology
the compound term 'black-tie' is a modern english formation that directly describes a key component of formal menswear. the word 'black' has ancient germanic roots, ultimately from a pie root meaning 'burnt' or 'dark', and has long been associated with formality and solemnity. 'tie' derives from the old english verb for binding, reflecting the garment's function. by the late 19th century, 'black tie' emerged as a sartorial shorthand, specifying the required black bow tie and, by extension, the entire semi-formal dress code, evolving from a literal description into a standardized social designation.
Analysis
Structure: black (color) + tie (neckwear)
'black' originates from old english 'blæc', meaning the darkest color, of germanic origin. 'tie' originates from old english 'tīgan', meaning to bind, of germanic origin.
Examples
the invitation specified a black-tie event.
he forgot to pack his black-tie for the gala dinner.
the dress code is not strictly black-tie; a dark suit is acceptable.